Home / 280,680,800.40-387,319,841.28-163,197,795.78

Finding the Fourth Proportional to 280,680,800.40, 387,319,841.28 and 163,197,795.78

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Solution

The fourth proportional to 280,680,800.40, 387,319,841.28 and 163,197,795.78 is: 225,201,525.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,680,800.40 : 387,319,841.28 = 163,197,795.78 : x
  2. Step 2: Convert to fraction form
    280,680,800.40/387,319,841.28 = 163,197,795.78/x
  3. Step 3: Cross multiply
    280,680,800.40x = 387,319,841.28 × 163,197,795.78
  4. Step 4: Simplify right side
    280,680,800.40x = 63,209,744,358,755,448
  5. Step 5: Solve for x
    x = 63,209,744,358,755,448/280,680,800.40
  6. Step 6: Final answer
    x = 225,201,525.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.